-0.8=.13x-.21x

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Solution for -0.8=.13x-.21x equation:


Simplifying
-0.8 = 0.13x + -0.21x

Combine like terms: 0.13x + -0.21x = -0.08x
-0.8 = -0.08x

Solving
-0.8 = -0.08x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '0.08x' to each side of the equation.
-0.8 + 0.08x = -0.08x + 0.08x

Combine like terms: -0.08x + 0.08x = 0.00
-0.8 + 0.08x = 0.00

Add '0.8' to each side of the equation.
-0.8 + 0.8 + 0.08x = 0.00 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 0.08x = 0.00 + 0.8
0.08x = 0.00 + 0.8

Combine like terms: 0.00 + 0.8 = 0.8
0.08x = 0.8

Divide each side by '0.08'.
x = 10

Simplifying
x = 10

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